IMO, stay away from the green brittles. Get REAL big and can be predatory so I hear. I've got a greyish/pinkish looking one. Had him for 3 years. Mild mannered. He'll stay in one place for days and all I see is his legs. He may come out at nite. He eats pellets.
What kinda hermits you got?
Those weird flea like creatures - copepods or amphipods. That's a good thing.
Looked at Ricordia? Similar to
shrooms. Look at frogspawn coral.